For the finite-temperature XX chain in the spacelike regime, the paper derives the exact leading asymptotic term of the transverse two-point function, including the previously undetermined amplitude C(T,h).
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Late-time large-distance asymptotics of the transverse correlation functions of the XX chain in the space-like regime
For the finite-temperature XX chain in the spacelike regime, the paper derives the exact leading asymptotic term of the transverse two-point function, including the previously undetermined amplitude C(T,h).